Wyoming Snow Precipitation Update
United States Natural Resources Water and Climate Center
Department of Conservation Portland, Oregon
Agriculture Service
S N O W - P R E C I P I T A T I O N U P D A T E
Based on Mountain Data from NRCS SNOTEL Sites
As of TUESDAY: FEBRUARY 19 , 2008
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 14.5 14.8 98 21.2 17.2 123
COTTONWOOD CREEK 7670 18.4 16.6 111 20.2 21.3 95
GRAND TARGHEE 9260 37.6 -M * 25.7 -M *
GRANITE CREEK 6770 13.7 14.7 93 19.1 16.0 119
GRASSY LAKE 7265 24.7 27.1 91 32.4 28.8 112
GROS VENTRE SUMMIT 8750 10.8 10.6 102 12.0 9.9 121
GUNSIGHT PASS 9820 10.2 -M * 11.7 -M *
LEWIS LAKE DIVIDE 7850 25.1 27.2 92 29.7 28.9 103
PHILLIPS BENCH 8200 24.1 21.9 110 27.3 22.7 120
SALT RIVER SUMMIT 7760 10.5 11.2 94 12.6 14.6 86
SNAKE RIVER STATION 6920 13.4 15.1 89 21.6 18.0 120
SPRING CREEK DIVIDE 9000 17.9 20.3 88 18.3 20.9 88
THUMB DIVIDE 7980 13.0 13.9 94 15.6 14.7 106
TOGWOTEE PASS 9580 21.5 19.3 111 23.5 19.2 122
TWO OCEAN PLATEAU 9240 28.3 21.7 130 23.0 21.5 107
WILLOW CREEK 8380 24.1 23.4 103 29.5 25.0 118
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Basin wide percent of average 101 110
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 20.7 18.7 111 19.1 15.9 120
BLACK BEAR 8170 37.0 30.4 122 33.5 30.4 110
CANYON 7870 13.8 10.6 130 17.2 12.1 142
FISHER CREEK 9100 34.5 27.6 125 -M 28.2 *
MADISON PLATEAU 7750 23.9 19.3 124 26.4 20.3 130
NORTHEAST ENTRANCE 7350 7.4 9.1 81 10.9 10.1 108
PARKER PEAK 9400 20.2 17.0 119 -M 12.7 *
SYLVAN LAKE 8420 16.3 17.5 93 20.8 16.8 124
THUMB DIVIDE 7980 13.0 13.9 94 15.6 14.7 106
TWO OCEAN PLATEAU 9240 28.3 21.7 130 23.0 21.5 107
WHISKEY CREEK 6800 15.1 13.3 114 21.2 16.0 132
WHITE MILL 8700 22.0 18.9 116 -M 21.0 *
WOLVERINE 7650 8.4 10.0 84 10.8 10.4 104
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Basin wide percent of average 114 118
WIND RIVER
BURROUGHS CREEK 8750 12.8 11.8 108 15.6 12.8 122
COLD SPRINGS 9630 5.4 6.7 81 8.3 7.9 105
DEER PARK 9700 11.0 13.9 79 15.6 16.6 94
HOBBS PARK 10100 10.0 11.2 89 10.8 9.2 117
LITTLE WARM 9370 7.8 8.9 88 11.1 10.2 109
SOUTH PASS 9040 10.2 13.2 77 13.0 14.0 93
ST. LAWRENCE ALT 8620 5.0 5.4 93 6.5 6.5 100
TOGWOTEE PASS 9580 21.5 19.3 111 23.5 19.2 122
TOWNSEND CREEK 8700 6.0 6.5 92 9.1 8.3 110
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Basin wide percent of average 93 108
BIGHORN BASIN
BALD MTN. 9380 12.7 14.9 85 12.2 13.2 92
BEAR TRAP MEADOW 8200 6.2 4.0 155 6.7 6.1 110
BLACKWATER 9780 19.7 19.0 104 18.5 16.0 116
BONE SPRINGS DIV 9350 12.7 12.1 105 14.1 10.8 131
EVENING STAR 9200 23.6 23.2 102 -M 20.2 *
GRAVE SPRINGS 8550 6.7 6.6 102 7.8 7.1 110
KIRWIN 9550 9.9 8.6 115 11.9 8.5 140
MARQUETTE 8760 3.4 6.5 52 7.0 7.0 100
MIDDLE POWDER 7760 7.5 8.3 90 6.5 9.0 72
OWL CREEK 8975 4.1 3.8 108 5.4 4.1 132
POWDER RIVER PASS 9480 9.1 8.1 112 11.1 9.3 119
SHELL CREEK 9580 12.3 11.0 112 12.1 10.3 117
SYLVAN LAKE 8420 16.3 17.5 93 20.8 16.8 124
SYLVAN ROAD 7120 8.8 10.5 84 17.4 14.8 118
TIMBER CREEK 7950 2.6 4.0 65 6.1 5.0 122
YOUNTS PEAK 8350 13.8 13.7 101 15.1 12.7 119
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Basin wide percent of average 99 115
SHOSHONE RIVER
BLACKWATER 9780 19.7 19.0 104 18.5 16.0 116
EVENING STAR 9200 23.6 23.2 102 -M 20.2 *
KIRWIN 9550 9.9 8.6 115 11.9 8.5 140
MARQUETTE 8760 3.4 6.5 52 7.0 7.0 100
SYLVAN LAKE 8420 16.3 17.5 93 20.8 16.8 124
SYLVAN ROAD 7120 8.8 10.5 84 17.4 14.8 118
YOUNTS PEAK 8350 13.8 13.7 101 15.1 12.7 119
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Basin wide percent of average 96 120
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.2 4.0 155 6.7 6.1 110
BIG GOOSE 7990 6.1 7.0 87 9.0 6.3 143
BONE SPRINGS DIV 9350 12.7 12.1 105 14.1 10.8 131
BURGESS JUNCTION 7880 8.6 8.4 102 10.2 8.9 115
CLOUD PEAK RESERVOIR 9860 11.6 9.2 126 11.5 9.1 126
DOME LAKE 8880 8.0 9.0 89 11.3 9.6 118
GRAVE SPRINGS 8550 6.7 6.6 102 7.8 7.1 110
HANSEN SAWMILL 8360 5.0 4.8 104 7.2 5.9 122
MIDDLE POWDER 7760 7.5 8.3 90 6.5 9.0 72
POWDER RIVER PASS 9480 9.1 8.1 112 11.1 9.3 119
SUCKER CREEK 8880 10.0 8.4 119 11.9 9.8 121
TIE CREEK 6870 4.9 4.6 107 8.8 7.4 119
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Basin wide percent of average 107 117
BELLE FOURCHE
BLIND PARK 6890 5.7 6.2 92 7.9 8.7 91
COLE CANYON 5910 4.9 5.3 92 5.9 5.2 113
NORTH RAPID CREEK 6130 6.4 6.2 103 6.6 7.0 94
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Basin wide percent of average 96 98
UPPER N. PLATTE RIVER
COLUMBINE 9160 20.6 20.0 103 22.8 19.2 119
DIVIDE PEAK 8880 19.3 14.5 133 19.5 15.7 124
ELK RIVER 8700 20.3 14.7 138 19.5 14.8 132
JOE WRIGHT 10120 18.5 16.0 116 21.6 18.6 116
NORTH FRENCH CREEK 10130 23.7 20.9 113 23.6 18.6 127
OLD BATTLE 10000 26.8 23.9 112 31.4 26.0 121
SAGE CREEK BASIN 7850 14.6 8.4 174 15.5 9.1 170
SOUTH BRUSH CREEK 8440 9.8 8.9 110 13.3 12.4 107
TOWER 10500 34.9 34.8 100 30.3 29.4 103
WEBBER SPRINGS 9250 20.8 19.2 108 24.4 20.4 120
WILLOW CREEK PASS 9540 12.4 8.8 141 13.0 9.5 137
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Basin wide percent of average 117 121
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 16.6 17.6 94 17.4 16.1 108
CASPER MTN. 7900 8.8 10.4 85 10.7 10.2 105
DEADMAN HILL 10220 13.4 12.0 112 13.9 12.1 115
DEER PARK 9700 11.0 13.9 79 15.6 16.6 94
LAPRELE CREEK 8375 -M 8.2 * -M 9.2 *
RENO HILL 8400 9.2 9.5 97 10.9 10.6 103
ROACH 9700 15.5 12.9 120 18.1 13.5 134
SAND LAKE 10050 21.4 23.0 93 21.5 17.8 121
SOUTH PASS 9040 10.2 13.2 77 13.0 14.0 93
WINDY PEAK 7900 6.2 5.5 113 7.7 7.8 99
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Basin wide percent of average 95 109
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 12.9 8.9 145 13.9 11.3 123
DIVIDE PEAK 8880 19.3 14.5 133 19.5 15.7 124
OLD BATTLE 10000 26.8 23.9 112 31.4 26.0 121
SANDSTONE RS 8150 14.3 11.4 125 17.8 14.4 124
WHISKEY PARK 8950 25.1 21.7 116 28.5 21.8 131
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Basin wide percent of average 122 125
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.4 11.1 94 10.5 10.4 101
BLIND BULL SUM 8650 19.4 21.2 92 14.8 17.6 84
EAST RIM DIVIDE 7930 7.1 10.1 70 9.2 9.4 98
ELKHART PARK G.S. 9400 9.2 10.2 90 9.9 10.1 98
GROS VENTRE SUMMIT 8750 10.8 10.6 102 12.0 9.9 121
GUNSIGHT PASS 9820 10.2 -M * 11.7 -M *
KENDALL R.S. 7740 9.4 11.4 82 11.3 11.4 99
LOOMIS PARK 8240 12.7 13.2 96 14.4 13.6 106
NEW FORK LAKE 8340 7.8 8.9 88 8.0 8.9 90
SNIDER BASIN 8060 10.2 11.4 89 11.4 12.7 90
SPRING CREEK DIVIDE 9000 17.9 20.3 88 18.3 20.9 88
TRIPLE PEAK 8500 18.5 19.2 96 21.6 18.9 114
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Basin wide percent of average 90 98
LOWER GREEN RIVER
HAMS FORK 7840 9.2 10.0 92 7.9 9.6 82
HEWINTA 9519 9.6 8.2 117 13.4 10.7 125
HICKERSON PARK 9145 5.4 5.3 102 7.6 5.8 131
HOLE-IN-ROCK 9150 4.6 5.1 90 7.9 5.4 146
INDIAN CREEK 9425 18.0 20.4 88 13.4 19.4 69
KELLEY R.S. 8180 -M 12.7 * -M 15.9 *
STEEL CREEK PARK 10200 11.0 11.4 96 14.6 11.8 124
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Basin wide percent of average 96 103
UPPER BEAR RIVER
BUG LAKE 7950 14.1 15.6 90 13.8 14.9 93
HAYDEN FORK 9212 14.3 11.9 120 18.5 15.7 118
KELLEY R.S. 8180 -M 12.7 * -M 15.9 *
LILY LAKE 9156 11.3 9.8 115 14.4 13.1 110
MONTE CRISTO 8960 22.4 22.3 100 21.6 19.4 111
SALT RIVER SUMMIT 7760 10.5 11.2 94 12.6 14.6 86
TRIAL LAKE 9992 16.0 18.7 86 19.3 18.6 104
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Basin wide percent of average 99 104
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and
Total Precipitation values
If the Basin wide percent of average value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Average represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the average value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the average value for those sites on this day.
Contact your state water supply staff for assistance.
Reference period for average conditions is 1961-90.
Provisional data, subject to revision.
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Normal Snow Water Equivalent and
Total Precipitation values
If the Basin Index (%) value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Median represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Average value for those sites on this day.
Contact your state water supply staff for assistance.
Medians and averages are calculated for the period 1981-2010.
Provisional data, subject to revision.
* Site -- Either: (a) the current value is missing; (b) the median or
average for the day is not available or is zero; or (c) for snow water
equivalent, the median for the day is less than 10% of the maximum
median value for the year.
* Basin - More than half of the sites within the basin are flagged with *,
preventing the calculation of a meaningful basin index.
The basin index is calculated as the sum of the valid current values
divided by the sum of the corresponding medians (for snow water equivalent)
or averages (for precipitation) and the resulting fraction multiplied by 100.